Improvement in rotary bake-ovens



' arms are secured to the shaft.

swa at [.rosEPH VA not BELOIT, Wisconsin. 7

Letters Patent No.'107,984. dated October 4, 1870.

IMPROVVEMEVNT m RoT Rv-BAKE-ovENs.

The Schedule referred to in'these Letters Patent and making part of the same.

I, J osEPH Vane, of Beloit,.in the county of Rock and State of Wisconsin, haveinvented a certain Improvement in Ovens, of which'the following'is a speci- The Nature-and Object ofmy I it'vent'ioa. Myinvention relates to'the'open walls of the fire-place or furnaceofthe oven, and dispensing with the bottom of the baking-chamber,- so that the'h'eat and smoke will pass direotly'through the walls ofI-the furnace on all sides into the baking-chamber of the oven. I save p the expense of a bottom-plate tome baking-chain:

her, also offlues and my furnace isconstructed at a less expense. Ialso admit all the heat ofthe fire directlyinto the baking-chamber, or space, from all sides of the furnace? I further claim the combination .ofthe arms H, secured to the shaftiby collars-around .the shaft, and braced by braces extending fi'oln the arms 'to, the .shaft below the collars, by which. the

By this construction I support the entire weight of the baking-hearth by'thecenter-shaft, and braceit sojrigidly thereto that jit wilfnotl sag, and the arms are easily attachedto the shaft without weakening it.

' I j Description of the Drawing.

1- represents a perspective view of my invent1on; l p i V Figure 2, a. perspective view of the same with the frontand hearth removed; and Figure 3 representsa verticalsectional view.

'1 a Gene-ml Description. i A is the wall ofthe oven, made of any suitable material; a y B is the door opening into the baking-chamber p G are the doors of the furnaces; and

I), the doors of the ash-pita j E is anarchover thetop of the oven.

h isfthe shaft of ther'otary baking-shelf orhearth. It has" a step, g,,and pa sses through the arch E, in whichit has a bearing. 1 l

a t is a pinion-wheel, rigidlyattached to the shaft'h, fort he purpose of revolving it.

,H arearms, with an upward projection'at one end,

as shown;

These arms are firmly secured to the shaft h by means of the collars It, the ends of the arms resting upouthe lower collar h, and the upward projection extending up under the upper collar 70'.

' The arms 11 do not pass through the shaftfb, but simply abut against it, so that, when a weight is placed upon the outer ends of the arms, the projections press upward,and pull, outward on, the upper collar It. l

It will be observed that the weight onoppositc arms 11 are sustained in. part bythe projections on the ends of the arms, pulling outward on the collaror ring h in opposite directions, and the shaft is thereby somewhat relieved.

k are braces bracing the arms H, by extending from the arms to a collar on the shaft 71, below the arms.

The object of this methodof attaching the arms to the shaft, and bracing them, is to prevent the baking-shelf or hearth from sagging and becoming uneven.

0 care the grate-barsof the fire-place, and

L, the walls with the bricleor tile, laid alittle distance apart, leaving a. spacebetween them for the heat and gases to pass directly through intothe baking-space, in all directions, directly from the fire.

The revolving baking-hearth is'enth ely supported by the shaft 71, and revolves above the open furnaces,

and subjects all the bread to the same amount of heat in making the revolution. v

The arms H-are secured to the shaft h in a simple manner by the collars,.and are held firmly by the braces It, extending to the shaft below.

. I have a simple, cheap, durable oven, and one requiring less fuel than my oven formerlypatented upi p on which this is an improvement.

I am aware that there are other ovens in which the products of'combustion are admitted into the baking-chamberthereon viz: Hosea Balls patenltof September 23, 1856, shows a chamber beneath the bottom of the baking-chamber, through which the products of combustion pass into aspace in the wall lof the oven, and from which they are admitted directly into the baking-chamber; and Duncan McKenzics patent, of May 1, 186), shows a system of fluesl for conveying the products of combustion from i the fire-place through the bottom of the bakingchamber. m r

I disclaim the devices described in the aforesaid patent-s, for/conveying the products of combustion to the baking-chamber of the oven, as I; use neither the chamber or hollow walls of the former,"n or the system of flues of thev latter, but build open-wall fireplaces directly in the baking-chamber.

Ola-ibis. I claim-.- 1. The fire-places or furnaces L, constructed with open sides, substantially as described, in combination with a bake-oven,=constructed with no -partition or division between the furnaces and baking-chamber,

but the furnaces arranged directly within the baking chamber or space, substantially as and for the purposes specified. I

-2. The collars h, shalt h,-arms H, provided with an upward projection at the inner end, as described,

and braces 70, when all are constructed and arranged substantially as described.

JOSEPH VALE.

Witnesses:

S, K. BLODGETL' G. W. NIoHoLs. 

